fei_NodeCommMgr.hpp

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#ifndef _NodeCommMgr_hpp_
#define _NodeCommMgr_hpp_

/*--------------------------------------------------------------------*/
/*    Copyright 2005 Sandia Corporation.                              */
/*    Under the terms of Contract DE-AC04-94AL85000, there is a       */
/*    non-exclusive license for use of this work by or on behalf      */
/*    of the U.S. Government.  Export of this program may require     */
/*    a license from the United States Government.                    */
/*--------------------------------------------------------------------*/

#include <fei_fwd.hpp>

#include <fei_CommUtils.hpp>

class NodeCommMgr : public fei::MessageHandler<int> {
 public:
   enum { STRICTLY_LOW_PROC, PROC_WITH_LOCAL_ELEM, CALLER_SPECIFIES };

   NodeCommMgr(MPI_Comm comm, const SNL_FEI_Structure& problemStructure, int sharedNodeOwnership=STRICTLY_LOW_PROC);
   virtual ~NodeCommMgr();

   size_t getNumSharedNodes() {return(sharedNodeIDs.size());}
   std::vector<GlobalID>& getLocalNodeIDs() {return(localNodeIDs);}
   std::vector<GlobalID>& getSharedNodeIDs() {return(sharedNodeIDs);}
   std::vector<int>& getSharedNodeNumbers() {return(sharedNodeNumbers);}

   int getSharedNodeIndex_num(int nodeNumber);

   int addSharedNodes(const GlobalID* nodeIDs, int numNodes,
          const int* const* procs, const int* numProcs);

   int initComplete(NodeDatabase& nodeDB, bool safetyCheck);

   int informLocal(const NodeDescriptor& node);

   int exchangeEqnInfo();

   int getSharedNodeIndex(GlobalID nodeID);

   int getSharedNodeNumSubdomains(GlobalID nodeID);
   std::vector<int>* getSharedNodeSubdomainList(GlobalID nodeID);

   NodeDescriptor& getSharedNodeAtIndex(int index)
     {return(*(sharedNodes_[index]));}

   std::vector<int>& getSharedNodeProcs(int index) 
     {return(*(sharingProcs_[index]));};

   void setSharedOwnershipRule(int ownershipRule)
     { sharedNodeOwnership_ = ownershipRule; }

   std::vector<int>& getSendProcs();
   std::vector<int>& getRecvProcs();

   int getSendMessageLength(int destProc, int& messageLength);
   int getSendMessage(int destProc, std::vector<int>& message);
   int processRecvMessage(int srcProc, std::vector<int>& message);

 private:
   NodeCommMgr(const NodeCommMgr& src);
   NodeCommMgr& operator=(const NodeCommMgr& src);

   int allocateNodeDescriptorPtrs(NodeDatabase& nodeDB);

   int storeNodeProcs(int index, std::vector<std::vector<int>*>& procTable,
          const int* procs, int numProcs);

   int checkSharedNodeInfo();

   int checkCommArrays(const char* whichCheck,
           std::vector<int>& globalRemoteProcs,
           std::vector<int>& globalNodesPerRemoteProc,
           std::vector<int>& globalRemoteProcLengths,
           std::vector<int>& nodesPerRemoteProc,
           std::vector<int>& remoteProcs);

   void setNodeNumbersArray();

   void packLocalNodesAndData(int* data, int proc,
                             int numNodes, int len);
   void packRemoteNodesAndData(GlobalID* data, int proc,
                             int numNodes, int len);

   int adjustSharedOwnership();

   int createProcLists();

   int createProcList(std::vector<int>& itemsPerProc,
           std::vector<int>& procs);

   int exchangeSharedRemoteFieldsBlks();

   int getGlobalMaxFieldsBlocks(int& maxFields, int& maxBlocks);

   int getGlobalMaxFieldsBlocksSubdomains();

   NodeDescriptor** sharedNodes_;
   bool sharedNodesAllocated_;

   int sharedNodeOwnership_;

   std::vector<GlobalID> localNodeIDs;
   std::vector<GlobalID> remoteNodeIDs;

   std::vector<GlobalID> sharedNodeIDs; //global node identifiers

   std::vector<std::vector<int> > sharedNodeSubdomains;
                                          //subdomains each shared node
                                          //appears in.
   std::vector<int> trivialSubdomainList;

   std::vector<std::vector<int>*> sharingProcs_;//table, i-th row is a list of procs
                                          //associated with i-th shared node

   std::vector<int> sharedNodeNumbers;

   std::vector<int> remoteOwnerProcs_, remoteSharingProcs_;
   std::vector<int> nodesPerOwnerProc_, nodesPerSharingProc_;

   MPI_Comm comm_;
   int numProcs_, localProc_;

   int maxFields_;
   int maxBlocks_;
   int maxSubdomains_;

   bool initCompleteCalled_;
   const SNL_FEI_Structure& probStruc;
};

#endif